ON THE CONDUCTIVE POWEES OP VAEIOUS SUBSTANCES. 
848 
pressed after solidification, the compressing force being in each case =7500 lbs. per 
square inch. 
, /A = -086ft. 
‘ 1^9 = 7500 lbs. 
II. ^ 
A = -086 ft. 
j 9 = 7500 lbs. 
94°-2 
o 
70^-7 
t'-r 
r . 
470.2 
k 
-=•089 
c 
-=•086 
c 
TFas. 
III. Block I. uncompressed, and II. compressed. 
j rA=-09ft. 
■IjB = atmosph. 
II.{" = 
09 ft. 
7500 lbs. 
ty 
h- 
t'r 
h' 
132°-5 
92°-5 
95°*5 
94^-6 
94° 
61° 
k 
k 
072 
•079 
c 
c 
Chalk. 
IV. Block I. uncompressed ; II. compressed. 
1 j rA=-i3ft. 
■I^ = atmosph. 
xf rA=-ii ft. 
■\/i = 7500 lbs. 
1 
f \ t ' t‘ 
ty 1 # 2 - ; ‘ 2 - 
212° 1 147°-3 ( 154°-5 
148°-5 
153°-5 
r. 
55° 
k 
-=•18 
I c 
1 
-=•16 
c 
! 
The fact of - being smaller in the compressed than in the uncompressed block, may 
probably be attributed to some difference in the quantity of moisture contained in them. 
V. (a.) Two compressed blocks. 
*=•11 ft. 
Li 9 = 43001bs. 
XX r*='ii ft. 
= 7500 lbs. 
ty 
212° 
t.,. 
150° 
t'r 
159° 
# 2 - 
152° 
^ 2 * 
159° 
r. 
61° 
k 
-=•157 
-=•165 
c 
